What kind of information are you looking for?
"Day 231: Exciting Library Books!" by Anomalily. Licensed under a Creative Commons license.
Who? author/creator/publisher; contact information and accountability
Why? documentation about the source; purpose of source
When? currency
What? accuracy, bibliographical apparatus (sources, glossary, further readings)
Where? geographic coverage; place of publication
EVALUATE INFORMATION - CRAAP Test from Meriam Library, California State University (Under RESEARCH, click on EVALUATE INFORMATION to open a .pdf guide).
CRITICAL EVALUATION OF INFORMATION RESOURCES from E. J. Pratt Library, U of T
FINDING AND COMPARING SCHOLARLY, POPULAR, AND TRADE JOURNAL ARTICLES: created by San Diego State University Library and Information Access. c2011.
ULRICH's PERIODICAL DIRECTORY ONLINE: this resource will tell you if a periodical is peer-reviewed (refereed) or scholarly